ci: use bash -el so conda env is active in all steps (setup-miniconda IMPORTANT)

Made-with: Cursor

Author: Shivampal157

.github/workflows/main.yaml

@@ -33,7 +33,8 @@ jobs:
       cancel-in-progress: true
     defaults:
       run:
-        shell: bash -l {0}
+        # bash -el required so conda activation persists (README: IMPORTANT)
+        shell: bash -el {0}
     steps:
       - uses: actions/checkout@v4
 
@@ -56,13 +57,11 @@ jobs:
       - name: Linter
         if: ${{ github.event_name == 'pull_request' }}
         run: |
-          conda activate osl-web
           pre-commit install
           pre-commit run --all-files --verbose
 
       - name: Build the book
         run: |
-          conda activate osl-web
           makim pages.build
           echo "opensciencelabs.org" > build/CNAME